Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
120019goodexcellent41excellent
110020goodexcellent41excellent
100022goodexcellent51excellent
090026goodexcellent51excellent
080022goodexcellent51excellent
070025goodexcellent51excellent
060022goodexcellent51excellent
050021goodexcellent51excellent
040029goodexcellent61excellent
030030goodexcellent61excellent
020033goodexcellent61excellent
010025goodexcellent61excellent
000028goodexcellent51excellent
230022goodexcellent51excellent
220027goodexcellent61excellent
210031goodexcellent71excellent
200041lightly pollutedexcellent81excellent
190039lightly pollutedexcellent81excellent
180043lightly pollutedexcellent101excellent
170044lightly pollutedexcellent81excellent
160041lightly pollutedexcellent81excellent
150040lightly pollutedexcellent81excellent
140049lightly pollutedexcellent91excellent
130047lightly pollutedexcellent81excellent